Debt-to-Income (DTI) Ratio Calculator
Calculate your front-end and back-end debt-to-income (DTI) ratios. Check conventional, FHA, and VA mortgage approval limits with colour-coded risk gauges.
Gross Income & Housing Obligations
Housing Costs (Front-End Ratio)
Non-Housing Monthly Debt Obligations
Include only required minimum monthly debt payments on your credit report.
Mortgage Underwriting & Borrowing Power
⚖️ Decision Verdict: Favorable Mortgage Pre-Approval Standing
Your front-end housing ratio is 27.5% (under the 28% guideline) and your back-end DTI is 38.1%. While slightly above the strictest 36% conventional benchmark, most automated underwriting systems (Fannie Mae Desktop Underwriter) will approve your application with good credit (700+) and a 5% to 20% down payment.
About this tool
How to use it
- Choose your local currency and pick a sample financial profile preset.
- Enter your gross monthly income (before payroll taxes or deductions).
- Enter your monthly housing expenses (rent or mortgage principal, interest, property taxes, home insurance, and HOA dues).
- Input all required monthly non-housing debt payments (auto loans, student loans, credit card minimum payments, personal loans).
- Review your front-end and back-end DTI percentages, conventional and FHA loan pre-approval statuses, and maximum allowable housing payment.
Why it matters
Your Debt-to-Income (DTI) ratio is the single most important number mortgage underwriters evaluate when determining whether you qualify for a home loan and how much money you can borrow. Knowing your exact front-end and back-end ratios before applying prevents credit check hard inquiries on doomed applications.
When to use it
Use this calculator before house hunting, shopping for mortgage pre-approval, taking on a new car loan, or planning debt consolidation.
Good to know
The 28/36 Rule: Lenders prefer no more than 28% of gross monthly income spent on housing costs (front-end DTI) and no more than 36% on total debt obligations (back-end DTI). Non-debt expenses like groceries, cell phone bills, and utility bills are NOT counted in mortgage DTI.
Common questions
What is the difference between front-end and back-end DTI?
Front-end DTI includes only housing expenses (mortgage principal, interest, property taxes, homeowners insurance, and HOA fees) divided by gross income. Back-end DTI includes housing PLUS all recurring debt payments (auto loans, student loans, credit card minimums) divided by gross income.
What is the maximum DTI to buy a house?
For a conventional mortgage (Fannie Mae / Freddie Mac), the preferred maximum back-end DTI is 36%, though automated underwriting can approve up to 45%–50% with strong credit and cash reserves. FHA loans generally permit up to 43% (and up to 50% with compensating factors), while VA loans benchmark at 41%.
Do utilities and groceries count toward DTI?
No. Underwriting DTI guidelines only count contractual debt obligations that appear on your credit report (mortgages, auto loans, student loans, personal loans, and credit card minimum payments). Living expenses like food, fuel, health insurance, and cell phone plans are excluded.
How can I lower my DTI ratio quickly?
The fastest way to lower DTI is paying off small credit card balances or personal loans with high monthly minimum payments, refinancing an auto loan to a longer term to reduce the monthly requirement, or adding a co-borrower's income.
How do lenders calculate student loans for DTI?
Even if student loans are in deferment or on an income-driven repayment (IDR) plan, mortgage guidelines require lenders to count either your documented IDR monthly payment (if above $0) or 0.5% to 1.0% of the total loan balance as your monthly debt liability.